精華區beta NTU-Exam 關於我們 聯絡資訊
課程名稱︰工程數學 課程性質︰ 課程教師︰徐治平 開課學院:工學院 開課系所︰化工系 考試日期(年月日)︰2011/11/4 考試時限(分鐘):120 是否需發放獎勵金:是 (如未明確表示,則不予發放) 試題 : 1.Find the general solution of the following equations (6% each) (a) sin(2x)y'+2ysin^2(x)=2sin(x) (b) y'+sec(x)y=cos(x) (c) 2cos(x+y)-2xsin(x+y)-2xsin(x+y)y'=0 (d) 4y^4+3cos(x)+(16(y^3)x-3cos(y))y'=0 (e) 6(x^2)y+12xy+y^2+(6x^2+2y)y'=0 (f) 2y^2-9xy+(3xy-6x^2)y'=0 (g) y'=(1/x^2)y^2-(1/x)y+1 (h) y'+(1/x)y=(2/x^3)y^(-4/3) (i) xy'=xcos(y/x)+y (j) y"-2y'+10y=0 (k) (x^2)y"-11xy'+35y=0 2. Find the general solution of the following equations (8% each) (a) y"-5y'+6y=8sin^2(4x) (b) y"-2y'+y=3x+25sin(3x) (c) (x^2)y"-11xy'+35y=0 3. Find the general solution of the following equation (10%) y(iv)-5y"+4y=0 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.7.214
s93015a :1.(e) (6x^(22)y)? (6x^(22y))? 11/04 14:05
※ 編輯: s871526117 來自: 140.112.22.94 (11/04 17:21)
s871526117 :抱歉打錯了!!! 11/04 17:22
jasonfghx :強 11/05 18:29